Math Exam Worksheet With Answer Key - Math 103/gracey Page 7
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2213) The following data consists of the weights (in pounds) of 15 randomly selected women and the
13)
weights of 15 randomly selected men. Construct a back-to-back stemplot for the data.
Women: 128
150
118
166
142
122
137
110
175
152
145
126
139
111
170
Men:
140
153
199
186
169
136
176
162
196
155
173
190
141
166
153
Men
Women
Men
Women
11 0 1
11 0 1 8
12 2 6 8
12 2 6 8
6 13 7 9
6 13 7 9
1 0 14 2 5
1 0 14 2 5
A)
B)
5 3 3 15 0 2 4
5 3 3 15 0 2
9 6 2 16 6
9 6 2 16 6
6 3 17 0 5
6 3 17 0 5
9 6 18
6 18
9 6 19
9 6 0 19
Find the original data from the stemplot.
14)
14)
Stem Leaves
6
5 8
7
1 8
8
5 5
A) 61, 65, 61, 78, 88, 85
B) 65, 61, 68, 71, 81, 85
C) 65, 68, 71, 71, 85, 85
D) 65, 68, 71, 78, 85, 85
Provide an appropriate response.
15) The table contains data from a study of daily study time for 40 students from Statistics 101.
15)
Construct an ogive from the data.
50
Minutes on
Number of
Relative
Cumulative
45
homework
students
frequency
frequency
40
0-15
2
0.05
2
35
16-30
4
0.10
6
30
31-45
8
0.20
14
25
46-60
18
0.45
32
20
61 - 75
4
0.10
36
15
76-90
4
0.10
40
10
5
0
15.5 30.5 45.5 60.5 75.5 90.5
Homework Time (minutes)
7
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